Simply replace the unfilled areas such as "__" and "_[date]_" with your information.
I have received literature regarding a seminar that will be held locally on the topic of [topic of seminar]. The cost of this seminar is [cost], and it will be held on [date of seminar] from [start time] to [end time].
I understand that the department probably has a budget regarding training, and I wondered if there might be room in the budget for me to attend this seminar. I feel that the seminar would be very beneficial to me and would enhance my performance by [provide one to two ways the seminar will enhance job performance].
I would be very grateful for this opportunity to increase my job knowledge, and appreciate anything you can do to get me into this seminar.